orbicularis oris Directory References Discover Titanosaurs: 8 of the World's Biggest Dinosaurs Causes of the Great Depression What Do Eggs Have to Do with Easter? 9 Mind-Altering Plants Which Religion Is the Oldest? What is Holy Week? Timeline of the Titanic’s Final Hours Contents orbicularis oris anatomy Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:lips In lips…lip is supplied by the orbicularis oris muscle, which encircles the opening. This muscle and others that radiate out into the cheeks make possible the lips’ many variations in shape and expression.Read More